Micronutrients for Soybean Production in the North Central Region
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Micronutrients are essential plant nutrients that are utilized by crops in very small amounts. A micronutrient deficiency can have a large impact on crop yield because it contributes to critical physiological processes. Elements considered micronutrients include boron (B), chlorine (Cl), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn). The concentration of micronutrients in the soil is determined by the mineralogy of the soil’s parent material and its organic matter content. Crop availability of micronutrients during the growing season also is affected by several interacting environmental factors including soil moisture, aeration, and temperature. These factors influence chemical reactions, the effectiveness of recycling with crop residues or animal manures, and processes mediated by soil microorganisms. Micronutrient deficiencies in soybean in the North Central Region are uncommon except for Fe and Mn. Most soils have naturally adequate levels of cropavailable micronutrients and some fertilizers, manure, and other amendments contain micronutrients. For example, potassium (K) chloride fertilizer (KCl) has 47 percent Cl. The complex factors that affect the crop availability
Mallarino, Antonio P.; Kaiser, Daniel E.; Ruiz-Diaz, Doriva A.; Laboski, Carrie A.M.; Camberato, James J.; and Vyn, Tony J., "Micronutrients for Soybean Production in the North Central Region" (2017). Extension and Outreach Publications. 567.
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